Spike-driving machine.



S. A. BARBER.

SPIKE DRIVING MACHINE.

APPLICATION FILED APR. 11, 1912.

Patented Apr. 8, 1913 2 SHEETS-SHEET 1.

in-we mtoz witnesses forms no a boring machine,

SAMUEL A. BARBER, OF FRANKFORT, KENTUCKY.

SPIKE-DRIVING MACHINE.

To all whom it may concern.

Be it known that l, SAMUEL A. BARBER, a citizen of the United States, residing at Frankfort, in the county of Franklin and State of Kent-ucky, have invented certain new and useful Improvements in Spike- Driving Machines; and I do declare the fol-\ lowing to be a full, clear, and exact description of the invention, such as will, enable others skilled in the art to which it appertains to make and use the same.

This invention relates to spiral tool drivers, and more especially to those wherein the driving is done by forward pressure; and the ob ect of the strument or tool of this kind more particularly adapted for driving threaded spikes through or alongside the base of rails into the ties. This object is carried out by the crrustruction hereinafter more fully described and claimed, and as shown in the drawings wherein- Figure l is a side elevation of this malchine complete, and Figs 2 and 3 are sections on the lines 2-2 and 3-3 of Fig. 1. Fig. 4 is an cnlar ed vertical section through the two standarcs and the plunger which moves between them, and Fig. is a cross section on the line 55 of Fig. 4:. I

In the drawings the numeral 1 iflesignates a rail mounted upon ties 2 and to which it is to be connected by spikes. I propose to thread the shanks of the latter so that in etl'ect they become screws, but this detail part of the present application. The tool described below would drive such a screw or threaded spike, or it a suitable bit be inserted. into its lower end it would bore a hole for such a spike pr one/ of any other form which could be driven into the hole, and on this understanding the tool might be called a spike driving machine or performed by it.

The numeral 3 designates broadly a clamp by means of which the tool is to be held on the head of the rail, and the same comprises a horizontal body 4 having a fixed and hookshaped jaw 5 depending from one side and a movable jaw 6 depending from and pivoted to its other side as at 7. The jaws are connected by a through bolt 8 having a thumb nut 9 on one extremity, and a roller 10 pref erably surrounds the body of this bolt be- Specification of Letters Patent.

Application filed April 11, 1912. Serial No. 639,987.

same is to produce'an inaccording to the work the handle 19 ter loosely within the extens 11 Patented Apr. 8; 1913..

tween the the rail as'seen. By nut the movable jaw ward a little so that the entire clam can be loosening the thumb slid along and adjusted in any desired position upon the rail in a manner which will be understood.

Rising from the otherwise, fiat-upper face of the body 4 is a pin 11 on which, beneath a collar or other fastening device 12, is pivotally mounted the inner-end of the base plate 13 which may therefore swing in a horizontal plane at some distance above the head of the rail 1, and this plate may-if desired-be supported from the rail by means of a short leg 14 asseensothat what might be called the outer end of the base plate can swing across the rail and the bit (yet to be described) can be forced downward to either side thereof; I

Rising from the ed es ofthexbase plate 13 at opposite sides 0% the pin 11 are lugs 15 aving eyes 16 at their upper ends through which passes a bolt 17, and on the latter is pivoted the lower end otan upstanding link 18. 'To the upper end of the later is pivotally connected the main handle 15) whose plate l3as seen in Fig. 3. This swingin" connection by means of which "the inner end of the handle is attached to the inner end'of the base plate is. adopted for the purpose of allowing the point of connection between said handle and the bit driving mechanism (described below) to move vertically while the handle is swung around its pivot in a manner which will be clear.

Superimposed upon'and carried'by the gaws and rests upon'the" face of body therefore stands over the base 6 may he swung outforked outer end 34 of the base plate 13 are two upright standards 20. whose inner faces have two oppositely" disposed upright grooves 21, and between said standards re ciprocates a hollow plunger 29. having oppositely disposed ribs 23 sliding in said grooves. plunger is closed as seen at .24, and rising therefrom is an extension 25*having crossed slots through it.

projects loosely, and through the other slot passes a pin. 26 (preferably a bolt with a thumb nut as shown) which also passes through the handle and pivots the latits the "2071 the plunger is The upperend or head of the? I Through one of the latter standards the pivot26 through the lupger and handle must move vertically a though the handle swings over the link 18 in a manner described above; and as the in and handle bothhave some considerab e movement within the slots in the extension- 25, this form of connection germitsa poun g acti'gn on the plunger w ich ismeful in star-tin the bit, Into the tie, 1o sharp point. p

The indle 30 has a socket 31 in its lower end an a set screw-or other suitable .clamp ,32 for holding within said socket. the upper end of the bit if the mahine is to do drillw ing or the head of a specially shaped spike or'screw if the machine is to sink the same in the tie in a manner above suggested. The bod of the s indle is threaded or rifled as at it exten s loosely through and may rogo tate or reciprocate within the fork 34: in the I outer end 'of the base plate 13, it passes upward into the interior of. the plunger 22 in which it is also guided, and it is pressed normall downward by means of an expan- 25 sive coi ed spring 35 interposed between its u per end and the closed upper end 24 of the .p unger as seen. By this means it will be seen that the spring tends to normally roject the spindle through the fork 34 and old so the bit to its work while the handle rises, and the farther the handle is depressed the greater the tension of the 'spring which is thereby compressed and hence toward the close of its stroke the pressure 11 on the 35 s indle will almost and finally ful y equal t at upon the handle. Meanwhile the spindle is rotated in the manner which will now be described.

Carried on ball bearings 36 within a channel in the enlarged lower end 22 of the plunger 2 is a nut 36 which is shown in Fig. i as having'two internal projections 37 adapted to engage the rifles within the spindle although of course the projections an rifles are the on the. rill. The upper end of the nut is provided with ratchet teeth 38, and at two or more opposite points within the shell of the plunger 22 are disposed pawls 39 borne normally downward by especially if said b1; as a springs 40. The re- --sult of this construction is, that when the plunger is depressed-'the'pawls engagin the teeth prevent the nut fromrotating an the projections within the nut engaging the rifles cause the rotation of the spin e;'-but when the handle is elevated and the plunger rises the nut is lpermitted to rotate because its ratchet teet move under the pawls 39 in a manner which will be clear. The upper face of the inner end' of the plate 13 is corrugated or grooved radially around the pin 11 as seen at 4, and so also is the lower faceof the member 12 which is a collar removably held upon. the upper end.

55 of the pinll by any suitable means such as uivalent of teeth engaging threads.

a bolt 12. Downward pressure on the outer end of the handle 19 causes its inner end to members 12 and 13 to interengage so that the -.outer end of the base late cannot be swung to either side of its 0 amped position upon therail.

What is claimed as new is:

1. The combination with a clamp adapted to embrace the head of a rail and having a pin rising from its body, and a fastening device on said pin; of a base plate whose outer end is forked and whose inner end is pivotally mounted on the pin beneath said fastening device so that its body may swing in a horizontal plane above the rail, a leg depending from said plate and adapted to rest on the rail a pair the arms of the fork, and driving mechanism regiprocating vertically between said stander s.

2. The combination with a-clamp comprising a flat body havin a pin risin from its upper face, and a col ar detachably secured on the upper end of said pin and having radial grooves in its lower face; of a base plate whose inner end. is pivoted on said in and radially grooved in its upper ace around the pivot, a standard rising from the .outer end of the plate, driving mechanism reciprocating vertically within said standard, a link pivoted to the head of said pin, and a main handle ivoted to the upper end of the link and connected with said mechanism.

plate, a two-partstangard rising from one end of the same an containing upright guides a link connected with the other end ofisai plate, and a handle pivotally connected at one extremity with said link and passing-over the standard; of a s indle guided through plate, a dplunger reciprocating verticallyiin said gui es and having an extension from its upper end provided with two slots standing at right angles to each other, said handle passi throu bone of the slots, a bolt throng the ot er of the slots and through the handle, said slots being of sufiicient length to permit some lost motion of the handle and bolt therein, and connections between the plunger and spindle.

4. The combination with an upright pair of standards having grooves in their inner faces, a hollow plunger reciprocatin between said standards and having ribs sliding in said grooves and its upper end closed and its lower end notched, and means for reei rocating said plunger; of a rifled spind e whose body is uided between the lower end of the standards and whose upper cndcxtends into the plunger, an expansive spring closed upper end of the plunger, a nut rotabetween this end of the spindle and the rise and the ribs or corrugations on the two of standards rising from V 3. The combination with a horizontal base the outer end of sai base 'tably mounted in the lower end of the In testimony whereof I have hereunto set plunger and having ratchetteeth on its my hand in presence of two subscribing Witupper face and inwardly extending projecnesses. tions engaging the rifles of the spindle, and SAMUEL A. BARBER.

E- springressed pawls mounted in the notches Witnesses:

in the ower end of the plunger and engag B. F. THORN LEROY, ing said ratchet teeth. W. C. FURR. 

